A​ case-control (or​ retrospective) study was conducted to investigate a relationship between the colors of helmets worn by motorcycle drivers and whether they are injured or killed in a crash. Results are given in the accompanying table. Using a 0.01 significance​ level, test the claim that injuries are independent of helmet color.         Color of Helmet         Black White Yellow Red Blue     Controls​ (not injured)   486 376 31 158 83     Cases​ (injured or​ killed)   216 125 9 66 39     Identify the null and alternative hypotheses. Choose the correct answer below.   Compute the test statistic.( round 3 decimal places) Find the critical​ value(s). (3 decimal places) What is the conclusion based on the hypothesis​ test?

Q: None

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